In my company i have been told that when we are using the microontroller for the first time(factory sealed),it is required to program boot vector and other few parameters using the universal programmer(parallel port) to make it compatible for In system programming(ISP).
But as per user manual i understood that only when we are writing a custom bootloader for ISP at a different location other than the default ISP address then only we need to program that address to boot vector with parallel port device.
Can any one tell is it required to do that.
I am using NXP P89LPC954 Microcontroller(80CS1 based)